One vertex per element, one color per generator, with an edge from x to x·s.
(1,2)(3,6)(4,5)(7,8)(17,18,23,21)(19,27,30,32)(20,26,22,25)(24,29,31,28)(9,10)(11,15)(12,14)(13,16)(17,19,20,29,23,30,22,28)(18,24,25,32,21,31,26,27)(2,5)(6,8)(9,11,12,16)(10,13,14,15)(17,20,23,22)(18,25,21,26)(19,28,30,29)(24,27,31,32)(1,3,4,7)(2,6,5,8)(10,14)(13,15)(17,21,23,18)(19,24,30,31)(20,26,22,25)(27,29,32,28)(17,20,23,22)(18,26,21,25)(19,29,30,28)(24,27,31,32)A Cayley diagram is a choice, not a fact about the group. Another drawing of this group — in a book, or on a different generating set — may look nothing like this one.